package com.szj.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

@Slf4j
@Component
public class DemoInterceptor implements HandlerInterceptor {
    //在请求处理之前进行调用（Controller方法调用之前）- 返回值为true表示继续流程（如调用下一个拦截器或处理器）；返回值为false表示流程中断，不会继续调用其他的拦截器或处理器，此时会直接返回给用户响应；
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("preHandle...");
        return true;
    }

    //请求处理之后进行调用，但是在视图被渲染之前（Controller方法调用之后）
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("postHandle...");
    }

    //在流程完成之后进行调用，一般用于资源清理
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        log.info("afterCompletion...");
    }
}
